7.5

CVE-2020-36475

An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). The calculations performed by mbedtls_mpi_exp_mod are not limited; thus, supplying overly large parameters could lead to denial of service when generating Diffie-Hellman key pairs.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Arm ≫ Mbed Tls Version < 2.7.18
Arm ≫ Mbed Tls Version >= 2.8.0 < 2.16.9
Arm ≫ Mbed Tls Version >= 2.17.0 < 2.25.0
Siemens ≫ Logo! Cmr2020 Firmware Version < 2.2
   Siemens ≫ Logo! Cmr2020 Version-
Siemens ≫ Logo! Cmr2040 Firmware Version < 2.2
   Siemens ≫ Logo! Cmr2040 Version-
Debian ≫ Debian Linux Version9.0
Debian ≫ Debian Linux Version10.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.97% 0.779
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE-131 Incorrect Calculation of Buffer Size

The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.

https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html
Third Party Advisory
Mailing List
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
Third Party Advisory
Mailing List
https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf
Patch
Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9
Third Party Advisory
Release Notes
https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0
Third Party Advisory
Release Notes
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18
Third Party Advisory
Release Notes